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Semtech Corporation GS12181-INE3
- Part No.:
- GS12181-INE3
- Manufacturer:
- Semtech Corporation
- Category:
- Video Processing
- Package:
- -
- Datasheet:
-
GS12181-INE3.pdf
- Description:
- IC VIDEO DRIVER QFN 40L 6X4
- Quantity:
- Payment:
- Shipping:
Inventory:2,117
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Product details
Overview
GS12181-INE3 from Semtech is a multi-rate UHD-SDI cable driver with integrated retiming, supporting data rates from 1 Mbps to 11.88 Gbps (12G), featuring input trace equalization, 1000 mV maximum output swing, and SMPTE-compliant output return loss of –10 dB at 12G/6G. It operates from 1.8 V or 2.5 V supplies and delivers low-jitter retimed SDI signals for broadcast routing and distribution equipment.
For engineers reviewing the GS12181-INE3 datasheet, pinout, applications, or equivalent options, this device serves as a high-integrity, retiming-capable cable driver optimized for UHDTV-1/UHDTV-2 infrastructure, long-reach 12G backplanes, and SMPTE ST 2082-1/ST 2081-1 compliant systems requiring robust signal integrity diagnostics and minimal layout overhead.
Technical Context
The GS12181-INE3 implements a fully integrated retimer with adaptive input trace equalization to compensate for PCB interconnect losses up to 12Gbps, enabling reliable signal recovery before driving coaxial cable. Its dual-output architecture supports independent retimed-data or bypass-data selection per channel via GPIO control.
It features a high-resolution 3D eye monitor, PRBS pattern generation and checking, and programmable pre-emphasis - all accessible via SPI interface. The device operates without external clock reference and complies with SMPTE ST 2082-1, ST 2081-1, ST 424, ST 292-1, and ST 259-C standards across all supported rates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 1–11880 Mbps: Supports full UHD-SDI stack including 12G, 6G, 3G, HD, and SD rates in a single device. |
| Supply Voltage | 1.8 V or 2.5 V: Dual-supply operation enables compatibility with modern low-voltage FPGA I/O domains and power-efficient system design. |
| Output Swing | Up to 1000 mV: Sufficient headroom to drive long coaxial cables while maintaining SMPTE-compliant eye opening. |
| Output Return Loss | 12G: –10 dB, 6G: –10 dB, 3G: –15 dB: Exceeds SMPTE minimum requirements, simplifying board-level impedance matching. |
| Power Consumption | 310 mW (with integrated retimer): Includes retimer power; enables thermal management in high-density 12G router blades. |
| Operating Temp | –40 °C to +85 °C: Qualified for industrial and broadcast equipment deployed in uncontrolled environments. |
| Package | QFN-40 (6×4 mm): Asymmetric footprint accommodates dense connector pitch and eases routing in space-constrained video processing modules. |
Pinout & Package
GS12181-INE3 is housed in a 40-pin QFN package (6 mm × 4 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are defined per Semtech's official pinout diagram for GS12181.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DDI | Differential Data Input | Accepts AC-coupled SMPTE-compliant serial video input; supports 12G–SD rates with internal equalization. |
| SDO0 / SDO1 | Differential Serial Data Outputs | Two independent retimed or bypassed outputs; each configurable via GPIO or SPI for flexible signal routing. |
| CSb | Chip Select (Active Low) | Enables SPI communication; allows daisy-chaining multiple GS12181-INE3 devices on shared bus. |
| SCLK | SPI Clock | Supports up to 25 MHz SPI clock for fast register configuration and real-time diagnostics access. |
| SDIN / SDOUT | SPI Data In / Out | Full-duplex SPI interface for reading eye monitor data, PRBS status, and configuring pre-emphasis levels. |
| GPIO0–GPIO3 | General-Purpose I/O | Control output mode selection (retimed/bypass/PRBS), enable/disable outputs, and configure diagnostic features. |
| VDDIO_1P8 / VDDIO_2P5 | I/O Supply Rails | Separate 1.8 V and 2.5 V supply pins allow mixed-voltage system integration without level shifters. |
| EPAD | Exposed Thermal Pad | Must be soldered to PCB ground plane for thermal dissipation; critical for sustained 12G operation at +85 °C. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Retimer | Reduces output jitter to ≤0.08 UI at 12G, enabling direct connection to jitter-sensitive FPGAs without external reclocking. |
| Input Trace Equalization | Compensates for up to 15-inch FR4 PCB traces at 12G, eliminating need for external equalization components in backplane designs. |
| Programmable Pre-emphasis | Adjustable high-frequency boost on SDO0/SDO1 outputs ensures SMPTE-compliant eye opening after connector/cable loss. |
| 3D Eye Monitor | On-chip real-time eye diagram visualization via SPI; enables in-system debug without external test equipment. |
| PRBS Generator & Checker | On-device bit-error rate testing using PRBS7/PRBS15/PRBS31 patterns; validates link integrity during production and field maintenance. |
Applications
| 12G Broadcast Router Output Stage | UHDTV-2 Production Switcher Output Driver |
|---|---|
Use Scenario: Driving dual 12G-SDI outputs from an FPGA-based routing matrix to SMPTE-compliant coaxial distribution amplifiers. IC Role / Device Role / Timing Role: Cable driver with integrated retiming and input trace EQ; restores signal integrity degraded by FPGA SerDes and long PCB traces. Use Value: Eliminates need for discrete reclocker + driver pair, reduces BOM count by 2 components, and maintains <0.1 UI output jitter at 12G over 15-inch traces. |
Use Scenario: Final-stage signal conditioning for 12G-SDI outputs in a 4K/60p production switcher handling HDR and HFR video formats. IC Role / Device Role / Timing Role: Retiming cable driver ensuring SMPTE ST 2082-1 compliance and robust eye opening after connector insertion loss. Use Value: Delivers 1000 mV swing with –10 dB ORL at 12G, enabling >60 m coaxial reach while meeting broadcast-grade signal fidelity requirements. |
| Multi-Format Video Test Equipment Output | 12G Backplane Interface for Modular Video Processors |
Use Scenario: Generating calibrated 12G/6G/3G test signals with embedded PRBS and eye monitoring for lab validation of receivers and cables. IC Role / Device Role / Timing Role: Programmable cable driver with on-chip diagnostics; provides traceable signal source with real-time BER feedback. Use Value: Enables automated conformance testing per SMPTE ST 2082-1 Annex D without external pattern generator or oscilloscope dependency. |
Use Scenario: Interfacing between high-speed video processing module and backplane in modular broadcast infrastructure (e.g., frame synchronizers, up/down converters). IC Role / Device Role / Timing Role: Retiming driver compensating for interposer and backplane loss; maintains timing margin across hot-pluggable slots. Use Value: Input trace EQ + retimer combination ensures <0.08 UI jitter at backplane receiver input, supporting deterministic latency in synchronized multi-module systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar UHD-SDI cable driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GS12281-INE3 | Higher power (360 mW vs. 310 mW); identical pinout, same retimer and diagnostics; adds enhanced output eye shaping. | Preferred where maximum output swing margin (>1000 mV) and tighter ORL (–10 dB at 12G) are required for ultra-long cable runs. | Select GS12281-INE3 when designing for >100 m coaxial reach or when operating near SMPTE ORL limits; otherwise GS12181-INE3 offers optimal power/performance balance. |
| GS12081-INE3 | Lower power (170 mW); no integrated retimer; supports same data rates but outputs non-retimed (bypass-only) signals. | Suitable only for short-reach (<30 m), low-jitter source systems where external reclocking is already present. | Choose GS12081-INE3 only in cost- and power-constrained applications with existing reclockers; not suitable as drop-in replacement for retiming-critical designs. |
Compared with GS12281-INE3, GS12181-INE3 trades minor ORL margin and advanced eye shaping for 14% lower power and identical retiming performance; versus GS12081-INE3, it adds essential retiming capability at +82% power, enabling standalone deployment in jitter-sensitive FPGA-based systems.
Availability
GS12181-INE3 is available at Aetrix Electronics and suitable for broadcast routing, UHDTV-2 production switchers, and 12G test equipment requiring stable component supply, long-term lifecycle support, and SMPTE-compliant signal integrity.
Supply support for GS12181-INE3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Semtech Corporation is a global supplier of high-performance analog and mixed-signal semiconductors, specializing in precision sensing, connectivity, and power management solutions for enterprise and industrial markets.
The GS12181-INE3 belongs to Semtech's UHD-SDI cable driver product line, engineered specifically for next-generation broadcast infrastructure demanding SMPTE ST 2082-1 compliance, integrated retiming, and diagnostic-rich signal conditioning at 12Gbps.
FAQ
What is the primary function of the GS12181-INE3 in a UHD-SDI system?
The GS12181-INE3 functions as a multi-rate retiming cable driver that restores signal integrity in 12G–SD video links. It equalizes input traces, retimes data to suppress jitter, and drives coaxial cables with programmable pre-emphasis. In systems using the GS12181-INE3, designers achieve SMPTE-compliant output eyes without external reclockers or discrete drivers - a key advantage in compact broadcast hardware where the GS12181-INE3 replaces two chips.
Does the GS12181-INE3 require an external clock reference for retiming operation?
No, the GS12181-INE3 operates its integrated retimer autonomously without any external clock reference. It recovers timing directly from the incoming serial data stream using a built-in CDR (Clock and Data Recovery) circuit. This self-contained timing architecture simplifies system design and eliminates the need for VCXOs or clock distribution networks - a defining feature of the GS12181-INE3 compared to legacy solutions.
Can the GS12181-INE3 drive both 75 Ω coaxial cable and PCB traces simultaneously?
Yes, the GS12181-INE3 is designed to drive both 75 Ω coaxial infrastructure and on-board 100 Ω differential PCB traces. Its output stage supports AC-coupled coaxial output and DC-coupled backplane interfaces, with programmable pre-emphasis and output swing tailored for each path. When used in a system with the GS12181-INE3, designers can route one output to coax and the other to a high-speed connector without redesigning termination networks.
How does the 3D eye monitor in the GS12181-INE3 aid in production validation?
The GS12181-INE3's on-chip 3D eye monitor captures real-time horizontal/vertical eye opening metrics and jitter distribution, accessible via SPI. During production test, engineers use the GS12181-INE3's eye monitor to verify signal integrity without external oscilloscopes - reducing test time and fixture cost. Each GS12181-INE3 unit reports quantifiable pass/fail thresholds aligned to SMPTE ST 2082-1 Annex D compliance criteria.
Is the GS12181-INE3 pin-compatible with other Semtech UHD-SDI drivers like GS12281-INE3?
Yes, the GS12181-INE3 shares identical pinout, package (QFN-40, 6×4 mm), and register map with GS12281-INE3 and GS12182-INE3. This allows direct PCB-level substitution in existing designs - for example, upgrading to GS12281-INE3 for higher output swing or downgrading to GS12181-INE3 for lower power - without layout changes. All three variants maintain functional interoperability when the GS12181-INE3 is deployed in multi-source supply chains.
GS12181-INE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Function:
- Driver
- Applications:
- Professional Video
- Standards:
- SMPTE
- Control Interface:
- -
- Voltage - Supply:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
GS12181-INE3 FAQ
1.How can I place an order for GS12181-INE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for GS12181-INE3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for GS12181-INE3 reliable?
The price and inventory of GS12181-INE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GS12181-INE3 is usually 5 days.
3.What payment methods are accepted for GS12181-INE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GS12181-INE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GS12181-INE3?
GS12181-INE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GS12181-INE3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for GS12181-INE3?
For technical support, including GS12181-INE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GS12181-INE3 requirements.
6.How does Aetrix verify that GS12181-INE3 is sourced from the original manufacturer or authorized distributors?
All GS12181-INE3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that GS12181-INE3 meets industry standards.
7.What is the process for return or replacement of GS12181-INE3?
All GS12181-INE3 units undergo pre-shipment inspection (PSI). If there is an issue with GS12181-INE3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The GS12181-INE3 part is unused and in its original packaging.
Return procedure for GS12181-INE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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